1. General InformationThe UDL 250 is a compact long distance reader of the UHF type with an integratedantenna. The frequency range is factory-set and depends on allowed regulations for theparticular region (see also “Transmission Frequency” in chapter 1. “Technical Data”).The UDL 250 has been specially developed for contactless identification of objects within areading range up to 4 m.The most innovative feature of the UDL 250 is its intelligent antenna concept, where the polar-ization of the antenna can be adjusted in four different ways (circular: RHCP or LHCP and linear:horizontal or vertical). This individual adjustment allows reliable reading and writing of unfavor-ably positioned UHF transponders (ISO 18000-6 C / EPC Class1 Gen2).The large and easy to see LEDs signalize positive identification for the user.4 896108_wi_en_li_udl-250_pro_v130214_io_sk_fh_bf.odt V14/05/09Wiring and Installation UDL 250